Sean Johnson
DevOps Engineer at RubiconMD
San Antonio, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolSean Johnson is an experienced DevOps and Site Reliability engineer with 11 years building cloud-native infrastructure and developer tooling from internships to senior SRE roles. Based in San Antonio, he has led cloud migrations and platform work across AWS and GCP using Ansible, Terraform/Terragrunt, Hashicorp Nomad, Packer and other automation tools. At Mailgun he moved between development and reliability roles, contributing to core SDKs (notably Mailgun's Ruby and PHP libraries) and improving CI, dependency management, and API features. He combines hands-on software development experience with production-grade orchestration and testing practices, comfortable shipping both application and infrastructure changes. Currently driving DevOps at RubiconMD after a recent SRE role at Import.io, he brings a pragmatic focus on observability, test automation and repeatable deployments. Colleagues value his blend of backend coding chops and platform engineering that reduces operational toil while improving developer experience.
11 years of coding experience
8 years of employment as a software developer
Smithson Valley High SchoolUniversity of Texas at San Antonio
Ukrainian, German
Github Skills (19)
dependency-manager10
dependency-management10
unit-testing10
api-rest10
apidoc10
api-design10
restful-api10
rspec10
travis-ci10
bundle10
cicd10
ruby10
php10
api10
bundler10
Programming languages (18)
Github contributions (5)
mailgun/mailgun-ruby
Oct 2016 - Aug 2019
Mailgun's Official Ruby Library
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:6 releases, 40 commits, 84 PRs in 2 years 10 months
Contributions summary:Sean primarily focused on improving the Mailgun Ruby library's infrastructure, including setting up Slack notifications and integrating integration testing within Travis CI. They addressed dependency management by removing the JSON dependency and fixing bundler auto-require issues. Additionally, the user contributed to code quality by fixing logical errors, refactoring methods, and providing more informative error messages, while also bumping the version number and updating the readme.
mailgunruby
mailgun/mailgun-php
Oct 2016 - Jun 2017
Mailgun's Official SDK for PHP
Role in this project:Back-end Developer
Back-end DeveloperContributions:12 commits, 63 PRs, 73 pushes in 8 months
Contributions summary:Sean primarily focused on enhancing the Mailgun PHP SDK, specifically by implementing features related to the Domains API. This included adding, listing, and removing domain credentials, as well as updating credential passwords and managing connection settings. They also worked on refactoring code, renaming components for better clarity and improved unit and integration tests. The user demonstrated proficiency in building and testing functionalities related to the core features of the Mailgun API.
mailgunphp
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